National Public Seating® 18" Standard heavy duty padded stool with backrest features aluminum finish and has seat which is 14" in diameter and gray vinyl pad of 11 1/2" in diameter.The fortified construction and soft comfort of the 6400 Series heavy-duty padded stools are ideal for hands-on educational settings like art rooms, science labs, home economics or shop classrooms. This reliable stool features a strong frame of 18-gauge steel tubing securely welded to a 14" diameter seat pan. Riveted through the steel pan are 1/2"-thick gray vinyl cushioning that will provide years of dependable use. Footrest ring is securely bonded to each leg with four spotwell contact points.